Apple on Monday released iOS 6.1.1 to address a number of bugs for iPhone 4S owners who recently ran into a handful of issues following the release of iOS 6.1 for all of Apple's mobile devices.

The release is currently available as a direct download here (968MB) or as an over-the-air download. It's available only to iPhone 4S users.

Apple said in a knowledge base article that the update "fixes an issue that could impact cellular performance and reliability for iPhone 4S." No release was issued for iPhone 5 or other models of the handset at this time, despite claims from iPhone 5 owners that they were also negatively impacted by the iOS 6.1 update.

Two weeks after Apple released iOS 6.1, a number of iPhone 4S users began reporting battery drain and overheating issues possibly related to the update. British wireless carrier Vodafone UK even sent out a warning telling iPhone 4S owners not to upgrade to the latest OS version because the carrier determined it to cause 3G performance problems.

For instance, Apple's Support Community forum battery drain and overheating problems after applying the iOS 6.1 update.

In particular, the carrier noted that iOS 6.1 was creating intermittent problems with iPhone 4S models, causing the handsets to experience 3G-related issues with making calls, sending texts and accessing the company's data network. The reports on Apple's support forums, however, suggested that the problems may not be limited to just iPhone 4S users and may also affect iPhone 5 users to some extent.

Five betas and it was still a buggy mess, requiring a patch barely two weeks after release.
I think it's time they go back to square one, because every iteration of iOS is buggier and more battery hungry than the last.

Five betas and it was still a buggy mess, requiring a patch barely two weeks after release.
I think it's time they go back to square one, because every iteration of iOS is buggier and more battery hungry than the last.

What is going on at Apple?
A software upgrade should not break things, especially important ones like battery life.

I don't recall any software being released problem free. Not only does Apple have to support various favors of phones, but has to support various carriers as well. It isn't until the software is in the wild that some issues pop up.

I don't recall any software being released problem free. Not only does Apple have to support various favors of phones, but has to support various carriers as well. It isn't until the software is in the wild that some issues pop up.

It's getting crowded.

This bot has been removed from circulation due to a malfunctioning morality chip.

I don't recall any software being released problem free. Not only does Apple have to support various favors of phones, but has to support various carriers as well. It isn't until the software is in the wild that some issues pop up.

Yes, no software is bug-free. Sure they have to support various flavours, but wouldn't you think that batter life would be one of the "Holy Grails" ?

Apple, themselves mention that battery life is vitally important. I have noticed a decrease in my 4S, hopefully its just a one off.

At the end of the day, and in my opinion, Apple released an update that was "not quite ready".

Vodaphone has advised that iPhone 4S users not upgrade in the UK (I think), no advise was issued where I am, or I missed it.

The evidence that another update is in the pipeline does valaidate to some extent what I have mentioend here.

I have an iPhone 4 and since the latest 6.1 iOS update my wifi reception has dropped substantially - 2 or even 1 "bars" in places in the home where it was full reception. It drops out repeatedly, stopping podcast downloads.

I have both a router and a range extender and the problem exists regardless which of them the phone is connected to. It also exists if I try to connect to public wifi - completely unusable...

My 3G reception has dropped, with apps frequently timing out on connecting. Cold boots of the phone do not help.

But also, I use bluetooth headphones a lot (Nokia BH505), and the reception for them has plummeted to the point where it continually drops out even when the phone is in my shirt pocket - i.e. just 30cm from the headphones. Before the update, the reception was halfway through the house! The only place the bluetooth headphones work adequately (i.e with the phone 60cm or so away) now is inside the car - presumably the bodywork is concentrating the transmission.

I know it wasn't the headphones causing this because I thought so and took them back for exchange under warranty, and the new ones are exactly the same. Then I realised the wireless was tanking too.

So both wireless reception and bluetooth transmission strength have gone down the toilet following this iOS update.

Is Apple doing anything about this? It seems the communities are chock full of similar complaints and that for many the 6.1.1 patch even made things worse...

Also after the update, I was getting notification badge numbers about app updates being available, but the screen in AppStore app would just stay blank. Apple support came back with nothing of any help so I reset the phone and reinstalled off a backup, which fixed it. But my wife's 3GS has the same problem since she updated the iOS...

I updated to 6.1.1 yesterday and now cannot connect to my company's wireless system. I get 3G but no wireless connection.

I can only assume this is linked to the update.

Has this problem been addressed by Apple and if so what can I do to correct the problem?

Have you tried resetting your network settings? If that doesn't work have you tried backing up and then reseting the device? Often an issue with an update is caused by the update process, not the update itself.Edited by SolipsismX - 2/14/13 at 2:39pm

This bot has been removed from circulation due to a malfunctioning morality chip.

My wifi has not letting me use it.it stays off and won't let me slide it on since this update iOS 6.1.1. The sooner apple fixes this the better I use wifi a lot for study so it's a real pain in the ass to put it lightly. Once they fix it its gunna take a lot of hard yakka to catch up.grrrr APPLE!!!!

My wifi has not letting me use it.it stays off and won't let me slide it on since this update iOS 6.1.1. The sooner apple fixes this the better I use wifi a lot for study so it's a real pain in the ass to put it lightly. Once they fix it its gunna take a lot of hard yakka to catch up.grrrr APPLE!!!!

REPEAT: Have you tried resetting your network settings? If that doesn't work have you tried backing up and then reseting the device? Often an issue with an update is caused by the update process, not the update itself.

This bot has been removed from circulation due to a malfunctioning morality chip.

REPEAT: Have you tried resetting your network settings? If that doesn't work have you tried backing up and then reseting the device? Often an issue with an update is caused by the update process, not the update itself.

I have tried it all but for some reason the wifi option still won't slide on. I even tried putting the iPhone 4S in the fridge for 1/2hr.lol

Yep it just reinstalled the iOS 6.1.1 again and did the same thing. Unless I'm doing something wrong I would say its the iOS 6.1.1 update that's doing this problem??

If you've gone through those steps and you don't have Parental Control turned on for WiFi then I say get it to an Apple Store ASAP. Not even allowing you to turn WiFi on or off is a very unique issue for an iOS update so I wouldn't just wait and hope for another update in some future time to resolve it.

This bot has been removed from circulation due to a malfunctioning morality chip.

If you've gone through those steps and you don't have Parental Control turned on for WiFi then I say get it to an Apple Store ASAP. Not even allowing you to turn WiFi on or off is a very unique issue for an iOS update so I wouldn't just wait and hope for another update in some future time to resolve it.

I think that's what I'll do.thanks for your help its been good to get the advice.

After installing the same update I am having worst problem with my iPhone 4s,only iTunes and connection port symbol is showing on my screen and unable to operate my iPhone. Today I have called customer support team in India,they have asked me to restore and download some trouble fixer but also told me that I shall lost all my data with my iPhone. Now I am downloading the same as advised by customer support person named Mr. Nabin. God only knows what will happen next?